Commit Graph

1336226 Commits

Author SHA1 Message Date
Jakub Kicinski
b706d9f068 Merge branch 'net-phy-dp83822-add-support-for-changing-the-transmit-amplitude-voltage'
Dimitri Fedrau via says:

====================
net: phy: dp83822: Add support for changing the transmit amplitude voltage

Add support for changing the transmit amplitude voltage in 100BASE-TX mode.
Add support for configuration via DT.

v4: https://lore.kernel.org/20250211-dp83822-tx-swing-v4-0-1e8ebd71ad54@liebherr.com
v3: https://lore.kernel.org/20250204-dp83822-tx-swing-v3-0-9798e96500d9@liebherr.com
v2: https://lore.kernel.org/20250120-dp83822-tx-swing-v2-0-07c99dc42627@liebherr.com
v1: https://lore.kernel.org/20250113-dp83822-tx-swing-v1-0-7ed5a9d80010@liebherr.com
====================

Link: https://patch.msgid.link/20250214-dp83822-tx-swing-v5-0-02ca72620599@liebherr.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-17 16:40:49 -08:00
Dimitri Fedrau
4f3735e82d net: phy: dp83822: Add support for changing the transmit amplitude voltage
Add support for changing the transmit amplitude voltage in 100BASE-TX mode.
Modifying it can be necessary to compensate losses on the PCB and
connector, so the voltages measured on the RJ45 pins are conforming.

Signed-off-by: Dimitri Fedrau <dimitri.fedrau@liebherr.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250214-dp83822-tx-swing-v5-3-02ca72620599@liebherr.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-17 16:40:42 -08:00
Dimitri Fedrau
961ee5aeea net: phy: Add helper for getting tx amplitude gain
Add helper which returns the tx amplitude gain defined in device tree.
Modifying it can be necessary to compensate losses on the PCB and
connector, so the voltages measured on the RJ45 pins are conforming.

Signed-off-by: Dimitri Fedrau <dimitri.fedrau@liebherr.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250214-dp83822-tx-swing-v5-2-02ca72620599@liebherr.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-17 16:40:42 -08:00
Dimitri Fedrau
7fff5d9586 dt-bindings: net: ethernet-phy: add property tx-amplitude-100base-tx-percent
Add property tx-amplitude-100base-tx-percent in the device tree bindings
for configuring the tx amplitude of 100BASE-TX PHYs. Modifying it can be
necessary to compensate losses on the PCB and connector, so the voltages
measured on the RJ45 pins are conforming.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Dimitri Fedrau <dimitri.fedrau@liebherr.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250214-dp83822-tx-swing-v5-1-02ca72620599@liebherr.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-17 16:40:42 -08:00
Pranav Tyagi
dbcbec81c9 selftests: net: fix grammar in reuseaddr_ports_exhausted.c log message
This patch fixes a grammatical error in a test log message
in reuseaddr_ports_exhausted.c for better clarity.

Signed-off-by: Pranav Tyagi <pranav.tyagi03@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250213152612.4434-1-pranav.tyagi03@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-17 16:34:36 -08:00
Jakub Kicinski
fe3340a94a Merge branch 'mlx5-add-sensor-name-in-temperature-message'
Tariq Toukan says:

====================
mlx5: Add sensor name in temperature message

This small series from Shahar adds the sensors names to the temperature
event messages, in addition to the existing bitmap indicators.
This improves human readability.

Series starts with simple refactoring and modifications. The top patch
adds the sensors names.
====================

Link: https://patch.msgid.link/20250213094641.226501-1-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-17 16:27:40 -08:00
Shahar Shitrit
46fd50cfcc net/mlx5: Add sensor name to temperature event message
Previously, a temperature event message included a bitmap indicating
which sensors detect high temperatures.

To enhance clarity, we modify the message format to explicitly list
the names of the overheating sensors, alongside the sensors bitmap.
If HWMON is not configured, the event message remains unchanged.

Signed-off-by: Shahar Shitrit <shshitrit@nvidia.com>
Reviewed-by: Carolina Jubran <cjubran@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250213094641.226501-5-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-17 16:27:38 -08:00
Shahar Shitrit
633f16d7e0 net/mlx5: Modify LSB bitmask in temperature event to include only the first bit
In the sensor_count field of the MTEWE register, bits 1-62 are
supported only for unmanaged switches, not for NICs, and bit 63
is reserved for internal use.

To prevent confusing output that may include set bits that are
not relevant to NIC sensors, we update the bitmask to retain only
the first bit, which corresponds to the sensor ASIC.

Signed-off-by: Shahar Shitrit <shshitrit@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Mateusz Polchlopek <mateusz.polchlopek@intel.com>
Link: https://patch.msgid.link/20250213094641.226501-4-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-17 16:27:38 -08:00
Shahar Shitrit
b9b72ce0f5 net/mlx5: Prefix temperature event bitmap with '0x' for clarity
Prepend '0x' to the sensor bitmap in the warning message to clearly
indicate that the bitmap is in hexadecimal format.

Signed-off-by: Shahar Shitrit <shshitrit@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Mateusz Polchlopek <mateusz.polchlopek@intel.com>
Link: https://patch.msgid.link/20250213094641.226501-3-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-17 16:27:38 -08:00
Shahar Shitrit
9dd3d5d258 net/mlx5: Apply rate-limiting to high temperature warning
Wrap the high temperature warning in a temperature event with
a call to net_ratelimit() to prevent flooding the kernel log
with repeated warning messages when temperature exceeds the
threshold multiple times within a short duration.

Signed-off-by: Shahar Shitrit <shshitrit@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Mateusz Polchlopek <mateusz.polchlopek@intel.com>
Link: https://patch.msgid.link/20250213094641.226501-2-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-17 16:27:37 -08:00
Jakub Kicinski
6626f11c51 Merge branch 'net-phy-mediatek-add-token-ring-helper-functions'
Sky Huang says:

====================
net: phy: mediatek: Add token-ring helper functions

This patchset add token-ring helper functions and moves some macros from
mtk-ge.c into mtk-phy-lib.c.

v2: https://lore.kernel.org/20250116012159.3816135-2-SkyLake.Huang@mediatek.com
====================

Link: https://patch.msgid.link/20250213080553.921434-1-SkyLake.Huang@mediatek.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-17 16:23:07 -08:00
Sky Huang
be378ebd6c net: phy: mediatek: Move some macros to phy-lib for later use
Move some macros to phy-lib because MediaTek's 2.5G built-in
ethernet PHY will also use them.

Signed-off-by: Sky Huang <skylake.huang@mediatek.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250213080553.921434-6-SkyLake.Huang@mediatek.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-17 16:22:36 -08:00
Sky Huang
4786eff288 net: phy: mediatek: Add token ring clear bit operation support
Similar to __mtk_tr_set_bits() support. Previously in mtk-ge-soc.c,
we clear some register bits via token ring, which were also implemented
in three __phy_write(). Now we can do the same thing via
__mtk_tr_clr_bits() helper.

Signed-off-by: Sky Huang <skylake.huang@mediatek.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250213080553.921434-5-SkyLake.Huang@mediatek.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-17 16:22:36 -08:00
Sky Huang
40d33d6d3c net: phy: mediatek: Add token ring set bit operation support
Previously in mtk-ge-soc.c, we set some register bits via token
ring, which were implemented in three __phy_write().
Now we can do the same thing via __mtk_tr_set_bits() helper.

Signed-off-by: Sky Huang <skylake.huang@mediatek.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250213080553.921434-4-SkyLake.Huang@mediatek.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-17 16:22:36 -08:00
Sky Huang
afa08fde7c net: phy: mediatek: Add token ring access helper functions in mtk-phy-lib
This patch adds TR(token ring) manipulations and adds correct
macro names for those magic numbers. TR is a way to access
proprietary registers on page 52b5. Use these helper functions
so we can see which fields we're going to modify/set/clear.

TR functions with __* prefix mean that the operations inside
aren't wrapped by page select/restore functions.

This patch doesn't really change registers' settings but just
enhances readability and maintainability.

Signed-off-by: Sky Huang <skylake.huang@mediatek.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250213080553.921434-3-SkyLake.Huang@mediatek.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-17 16:22:36 -08:00
Sky Huang
2f435137a0 net: phy: mediatek: Change to more meaningful macros
Replace magic number with more meaningful macros in mtk-ge.c.
Also, move some common macros into mtk-phy-lib.c.

Signed-off-by: Sky Huang <skylake.huang@mediatek.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250213080553.921434-2-SkyLake.Huang@mediatek.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-17 16:22:36 -08:00
Russell King (Oracle)
1dd1bf505c net: xpcs: rearrange register definitions
Place register number definitions immediately above their field
definitions and order by register number.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/E1tjblS-00448F-8v@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-17 15:37:27 -08:00
Eric Dumazet
0784d83df3 ndisc: ndisc_send_redirect() cleanup
ndisc_send_redirect() is always called under rcu_read_lock().

It can use dev_net_rcu() and avoid one redundant
rcu_read_lock()/rcu_read_unlock() pair.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20250214140705.2105890-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-15 09:08:46 -08:00
Jakub Kicinski
7f89ec6c45 Merge branch 'bnxt_en-add-npar-1-2-and-tph-support'
Michael Chan says:

====================
bnxt_en: Add NPAR 1.2 and TPH support

The first patch adds NPAR 1.2 support.  Patches 2 to 11 add TPH
(TLP Processing Hints) support.  These TPH driver patches are new
revisions originally posted as part of the TPH PCI patch series.
Additional driver refactoring has been done so that we can free
and allocate RX completion ring and the TX rings if the channel is
a combined channel.  We also add napi_disable() and napi_enable()
during queue_stop() and queue_start() respectively, and reset for
error handling in queue_start().

v4: https://lore.kernel.org/20250208202916.1391614-1-michael.chan@broadcom.com
v3: https://lore.kernel.org/20250204004609.1107078-1-michael.chan@broadcom.com
v2: https://lore.kernel.org/20250116192343.34535-1-michael.chan@broadcom.com
v1: https://lore.kernel.org/20250113063927.4017173-1-michael.chan@broadcom.com

Discussion about adding napi_disable()/napi_enable():

https://lore.kernel.org/netdev/5336d624-8d8b-40a6-b732-b020e4a119a2@davidwei.uk/#t

Previous driver series fixing rtnl_lock and empty release function:

https://lore.kernel.org/netdev/20241115200412.1340286-1-wei.huang2@amd.com/

v5 of the PCI series using netdev_rx_queue_restart():

https://lore.kernel.org/netdev/20240916205103.3882081-5-wei.huang2@amd.com/

v1 of the PCI series using open/close:

https://lore.kernel.org/netdev/20240509162741.1937586-9-wei.huang2@amd.com/
====================

Link: https://patch.msgid.link/20250213011240.1640031-1-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 19:50:25 -08:00
Manoj Panicker
c214410c47 bnxt_en: Add TPH support in BNXT driver
Add TPH support to the Broadcom BNXT device driver. This allows the
driver to utilize TPH functions for retrieving and configuring Steering
Tags when changing interrupt affinity. With compatible NIC firmware,
network traffic will be tagged correctly with Steering Tags, resulting
in significant memory bandwidth savings and other advantages as
demonstrated by real network benchmarks on TPH-capable platforms.

Co-developed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Co-developed-by: Wei Huang <wei.huang2@amd.com>
Signed-off-by: Wei Huang <wei.huang2@amd.com>
Signed-off-by: Manoj Panicker <manoj.panicker2@amd.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250213011240.1640031-12-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 19:50:23 -08:00
Somnath Kotur
fe96d717d3 bnxt_en: Extend queue stop/start for TX rings
In order to use queue_stop/queue_start to support the new Steering
Tags, we need to free the TX ring and TX completion ring if it is a
combined channel with TX/RX sharing the same NAPI.  Otherwise
TX completions will not have the updated Steering Tag.  If TPH is
not enabled, we just stop the TX ring without freeing the TX/TX cmpl
rings.  With that we can now add napi_disable() and napi_enable()
during queue_stop()/ queue_start().  This will guarantee that NAPI
will stop processing the completion entries in case there are
additional pending entries in the completion rings after queue_stop().

There could be some NQEs sitting unprocessed while NAPI is disabled
thereby leaving the NQ unarmed.  Explicitly re-arm the NQ after
napi_enable() in queue start so that NAPI will resume properly.

Error handling in bnxt_queue_start() requires a reset.  If a TX
ring cannot be allocated or initialized properly, it will cause
TX timeout.  The reset will also free any partially allocated
rings.  We don't expect to hit this error path because re-allocating
previously reserved and allocated rings with the same parameters
should never fail.

Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250213011240.1640031-11-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 19:50:23 -08:00
Michael Chan
c8a0f7652d bnxt_en: Refactor TX ring free logic
Add a new bnxt_hwrm_tx_ring_free() function to handle freeing a HW
transmit ring.  The new function will also be used in the next patch
to free the TX ring in queue_stop.

Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250213011240.1640031-10-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 19:50:23 -08:00
Somnath Kotur
6b6bf60fc9 bnxt_en: Reallocate RX completion ring for TPH support
In order to program the correct Steering Tag during an IRQ affinity
change, we need to free/re-allocate the RX completion ring during
queue_restart.  If TPH is enabled, call FW to free the Rx completion
ring and clear the ring entries in queue_stop().  Re-allocate it in
queue_start() if TPH is enabled.  Note that TPH mode is not enabled
in this patch and will be enabled later in the patch series.

While modifying bnxt_queue_start(), remove the unnecessary zeroing of
rxr->rx_next_cons.  It gets overwritten by the clone in
bnxt_queue_start().  Remove the rx_reset counter increment since
restart is not reset.  Add comment to clarify that the ring
allocations in queue_start should never fail.

Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250213011240.1640031-9-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 19:50:23 -08:00
Michael Chan
4c8e612c9a bnxt_en: Pass NQ ID to the FW when allocating RX/RX AGG rings
Newer firmware can use the NQ ring ID associated with each RX/RX AGG
ring to enable PCIe Steering Tags on P5_PLUS chips.  When allocating
RX/RX AGG rings, pass along NQ ring ID for the firmware to use.  This
information helps optimize DMA writes by directing them to the cache
closer to the CPU consuming the data, potentially improving the
processing speed.  This change is backward-compatible with older
firmware, which will simply disregard the information.

Reviewed-by: Hongguang Gao <hongguang.gao@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250213011240.1640031-8-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 19:50:23 -08:00
Michael Chan
e1714de532 bnxt_en: Refactor RX/RX AGG ring parameters setup for P5_PLUS
There is some common code for setting up RX and RX AGG ring allocation
parameters for P5_PLUS chips.  Refactor the logic into a new function.

Reviewed-by: Hongguang Gao <hongguang.gao@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250213011240.1640031-7-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 19:50:22 -08:00
Somnath Kotur
09cc58d594 bnxt_en: Refactor bnxt_free_tx_rings() to free per TX ring
Modify bnxt_free_tx_rings() to free the skbs per TX ring.
This will be useful later in the series.

Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250213011240.1640031-6-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 19:50:22 -08:00
Somnath Kotur
f33a508c23 bnxt_en: Refactor completion ring free routine
Add a wrapper routine to free L2 completion rings.  This will be
useful later in the series.

Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250213011240.1640031-5-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 19:50:22 -08:00
Michael Chan
e6ec504856 bnxt_en: Refactor TX ring allocation logic
Add a new bnxt_hwrm_tx_ring_alloc() function to handle allocating
a transmit ring.  This will be useful later in the series.

Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250213011240.1640031-4-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 19:50:22 -08:00
Michael Chan
0fed290525 bnxt_en: Refactor completion ring allocation logic for P5_PLUS chips
Add a new bnxt_hwrm_cp_ring_alloc_p5() function to handle allocating
one completion ring on P5_PLUS chips.  This simplifies the existing code
and will be useful later in the series.

Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250213011240.1640031-3-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 19:50:22 -08:00
Michael Chan
ebdf7fe488 bnxt_en: Set NPAR 1.2 support when registering with firmware
NPAR (Network interface card partitioning)[1] 1.2 adds a transparent
VLAN tag for all packets between the NIC and the switch.  Because of
that, RX VLAN acceleration cannot be supported for any additional
host configured VLANs.  The driver has to acknowledge that it can
support no RX VLAN acceleration and set the NPAR 1.2 supported flag
when registering with the FW.  Otherwise, the FW call will fail and
the driver will abort on these NPAR 1.2 NICs with this error:

bnxt_en 0000:26:00.0 (unnamed net_device) (uninitialized): hwrm req_type 0x1d seq id 0xb error 0x2

[1] https://techdocs.broadcom.com/us/en/storage-and-ethernet-connectivity/ethernet-nic-controllers/bcm957xxx/adapters/introduction/features/network-partitioning-npar.html

Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250213011240.1640031-2-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 19:50:22 -08:00
Kees Cook
4a6f18f286 net/mlx4_core: Avoid impossible mlx4_db_alloc() order value
GCC can see that the value range for "order" is capped, but this leads
it to consider that it might be negative, leading to a false positive
warning (with GCC 15 with -Warray-bounds -fdiagnostics-details):

../drivers/net/ethernet/mellanox/mlx4/alloc.c:691:47: error: array subscript -1 is below array bounds of 'long unsigned int *[2]' [-Werror=array-bounds=]
  691 |                 i = find_first_bit(pgdir->bits[o], MLX4_DB_PER_PAGE >> o);
      |                                    ~~~~~~~~~~~^~~
  'mlx4_alloc_db_from_pgdir': events 1-2
  691 |                 i = find_first_bit(pgdir->bits[o], MLX4_DB_PER_PAGE >> o);                        |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                     |                         |                                                   |                     |                         (2) out of array bounds here
      |                     (1) when the condition is evaluated to true                             In file included from ../drivers/net/ethernet/mellanox/mlx4/mlx4.h:53,
                 from ../drivers/net/ethernet/mellanox/mlx4/alloc.c:42:
../include/linux/mlx4/device.h:664:33: note: while referencing 'bits'
  664 |         unsigned long          *bits[2];
      |                                 ^~~~

Switch the argument to unsigned int, which removes the compiler needing
to consider negative values.

Signed-off-by: Kees Cook <kees@kernel.org>
Link: https://patch.msgid.link/20250210174504.work.075-kees@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 19:47:35 -08:00
Heiner Kallweit
0025fa4525 net: phy: c45: improve handling of disabled EEE modes in generic ethtool functions
Currently disabled EEE modes are shown as supported in ethtool.
Change this by filtering them out when populating data->supported
in genphy_c45_ethtool_get_eee.
Disabled EEE modes are silently filtered out by genphy_c45_write_eee_adv.
This is planned to be removed, therefore ensure in
genphy_c45_ethtool_set_eee that disabled EEE modes are removed from the
user space provided EEE advertisement. For now keep the current behavior
to do this silently.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://patch.msgid.link/5187c86d-9a5a-482c-974f-cc103ce9738c@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 19:46:12 -08:00
Dan Carpenter
c2ddb619fa ice: Fix signedness bug in ice_init_interrupt_scheme()
If pci_alloc_irq_vectors() can't allocate the minimum number of vectors
then it returns -ENOSPC so there is no need to check for that in the
caller.  In fact, because pf->msix.min is an unsigned int, it means that
any negative error codes are type promoted to high positive values and
treated as success.  So here, the "return -ENOMEM;" is unreachable code.
Check for negatives instead.

Now that we're only dealing with error codes, it's easier to propagate
the error code from pci_alloc_irq_vectors() instead of hardcoding
-ENOMEM.

Fixes: 79d97b8cf9 ("ice: remove splitting MSI-X between features")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Link: https://patch.msgid.link/b16e4f01-4c85-46e2-b602-fce529293559@stanley.mountain
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 17:18:00 -08:00
Russell King (Oracle)
de38503b74 net: remove phylink_pcs .neg_mode boolean
As all PCS are using the neg_mode parameter rather than the legacy
an_mode, remove the ability to use the legacy an_mode. We remove the
tests in the phylink code, unconditionally passing the PCS neg_mode
parameter to PCS methods, and remove setting the flag from drivers.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tidPn-0040hd-2R@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 17:09:50 -08:00
Joe Damato
bf1b8e0abc documentation: networking: Add NAPI config
Document the existence of persistent per-NAPI configuration space and
the API that drivers can opt into.

Update stale documentation which suggested that NAPI IDs cannot be
queried from userspace.

Signed-off-by: Joe Damato <jdamato@fastly.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Link: https://patch.msgid.link/20250213191535.38792-1-jdamato@fastly.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 17:09:19 -08:00
Jakub Kicinski
6041d8bf32 Merge branch 'net-phy-clean-up-phy-h'
Heiner Kallweit says:

====================
net: phy: clean up phy.h

This series is a starting point to clean up phy.h and remove
definitions which are phylib-internal.
====================

Link: https://patch.msgid.link/d14f8a69-dc21-4ff7-8401-574ffe2f4bc5@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 17:07:49 -08:00
Heiner Kallweit
6b2edfba74 net: phy: remove helper phy_is_internal
Helper phy_is_internal() is just used in two places phylib-internally.
So let's remove it from the API.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Mateusz Polchlopek <mateusz.polchlopek@intel.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/f3f35265-80a9-4ed7-ad78-ae22c21e288b@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 17:07:46 -08:00
Heiner Kallweit
ef6249e37d net: phy: stop exporting phy_queue_state_machine
phy_queue_state_machine() isn't used outside phy.c,
so stop exporting it.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Mateusz Polchlopek <mateusz.polchlopek@intel.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/16986d3d-7baf-4b02-a641-e2916d491264@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 17:07:46 -08:00
Heiner Kallweit
d3a0e217f8 net: phy: stop exporting feature arrays which aren't used outside phylib
Stop exporting feature arrays which aren't used outside phylib.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Mateusz Polchlopek <mateusz.polchlopek@intel.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/01886672-4880-4ca8-b7b0-94d40f6e0ec5@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 17:07:45 -08:00
Heiner Kallweit
ea47e70e47 net: phy: remove fixup-related definitions from phy.h which are not used outside phylib
Certain fixup-related definitions aren't used outside phy_device.c.
So make them private and remove them from phy.h.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/ea6fde13-9183-4c7c-8434-6c0eb64fc72c@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 17:07:45 -08:00
Jakub Kicinski
a24c6ccc13 Merge branch 'net-phy-realtek-improve-mmd-register-access-for-internal-phy-s'
Heiner Kallweit says:

====================
net: phy: realtek: improve MMD register access for internal PHY's

The integrated PHYs on chip versions from RTL8168g allow to address
MDIO_MMD_VEND2 registers. All c22 standard registers are mapped to
MDIO_MMD_VEND2 registers. So far the paging mechanism is used to
address PHY registers. Add support for c45 ops to address MDIO_MMD_VEND2
registers directly, w/o the paging.
====================

Link: https://patch.msgid.link/c6a969ef-fd7f-48d6-8c48-4bc548831a8d@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 16:59:31 -08:00
Heiner Kallweit
02d3b306ac net: phy: realtek: switch from paged to MMD ops in rtl822x functions
The MDIO bus provided by r8169 for the internal PHY's now supports
c45 ops for the MDIO_MMD_VEND2 device. So we can switch to standard
MMD ops here.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/81416f95-0fac-4225-87b4-828e3738b8ed@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 16:59:30 -08:00
Heiner Kallweit
da681ed73f net: phy: realtek: improve mmd register access for internal PHY's
r8169 provides the MDIO bus for the internal PHY's. It has been extended
with c45 access functions for addressing MDIO_MMD_VEND2 registers.
So we can switch from paged access to directly addressing the
MDIO_MMD_VEND2 registers.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/a5f2333c-dda9-48ad-9801-77049766e632@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 16:59:29 -08:00
Heiner Kallweit
853e80369c r8169: add PHY c45 ops for MDIO_MMD_VENDOR2 registers
The integrated PHYs on chip versions from RTL8168g allow to address
MDIO_MMD_VEND2 registers. All c22 standard registers are mapped to
MDIO_MMD_VEND2 registers. So far the paging mechanism is used to
address PHY registers. Add support for c45 ops to address MDIO_MMD_VEND2
registers directly, w/o the paging.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/d6f97eaa-0f13-468f-89cb-75a41087bc4a@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 16:59:29 -08:00
Jakub Kicinski
412723d54a Merge branch 'net-phylink-xpcs-stmmac-support-pcs-eee-configuration'
Russell King says:

====================
net: phylink,xpcs,stmmac: support PCS EEE configuration

This series adds support for phylink managed EEE at the PCS level,
allowing xpcs_config_eee() to be removed. Sadly, we still end up with
a XPCS specific function to configure the clock multiplier.
====================

Link: https://patch.msgid.link/Z6naiPpxfxGr1Ic6@shell.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 13:42:54 -08:00
Russell King (Oracle)
1d4c99a1ac net: xpcs: group EEE code together
Move xpcs_config_eee() with the other EEE-related functions.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1thRQd-003w7a-MM@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 13:42:52 -08:00
Russell King (Oracle)
760320145a net: xpcs: clean up xpcs_config_eee()
There is now no need to pass the mult_fact into xpcs_config_eee(), so
let's remove that argument and use xpcs->eee_mult_fact directly. While
changing the function signature, as we pass true/false for enable, use
"bool" instead of "int" for this.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1thRQY-003w7U-IG@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 13:42:52 -08:00
Russell King (Oracle)
55faeb8996 net: xpcs: remove xpcs_config_eee() from global scope
Make xpcs_config_eee() private to the XPCS driver, called only from
the phylink pcs_disable_eee() and pcs_enable_eee() methods.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1thRQT-003w7O-Ec@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 13:42:52 -08:00
Russell King (Oracle)
dba7441b39 net: stmmac: remove calls to xpcs_config_eee()
Remove the explicit calls to xpcs_config_eee() from the stmmac driver,
preferring instead for phylink to manage the EEE configuration at the
PCS.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1thRQO-003w7I-Ap@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 13:42:52 -08:00
Russell King (Oracle)
5a12b2cf29 net: xpcs: convert to phylink managed EEE
Convert XPCS to use the new pcs_disable_eee() and pcs_enable_eee()
methods. Since stmmac is the only user of xpcs_config_eee(), we can
make this a no-op along with this change.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1thRQJ-003w7C-6v@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-14 13:42:51 -08:00